Mullumbimby
28 DAs lodged · last 90 daysMarket Intelligence
DAs Lodged
28↑
past 90 days · NSW Planning Portal
Professionals
—
covering this suburb
Median Project Value
$185,900
DAs lodged, past 90 days
Median Approval Time
45 days
approved DAs, last 12 months
As of 14 July 2026, Mullumbimby recorded 28 — Development applications lodged in Mullumbimby in the past 90 days (NSW Planning Portal)
As of 14 July 2026, Mullumbimby recorded $185,900 — Median estimated cost of development for DAs lodged in Mullumbimby in the past 90 days (NSW Planning Portal)
As of 14 July 2026, Mullumbimby recorded 45 days — Median lodgement-to-determination time for approved DAs in Mullumbimby, last 12 months (NSW Planning Portal)
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Recent Development Applications
Total dev. value
$11,024,443
Development types
Source
NSW Planning Portal
PAN-649958
58 NEW CITY ROAD MULLUMBIMBY 2482
Dwelling house; Alterations or additions to an existing building or structure; Balcony, deck, patio,…
$220,000
PAN-646144
3 ANN STREET MULLUMBIMBY 2482
Alterations or additions to an existing building or structure; Minor building alterations (internal)…
$139,700
PAN-649408
6 GOSHAWK LANE MULLUMBIMBY 2482
Erection of a new structure; Dual occupancy (detached)
$934,363
2 new dwellings
PAN-592476
115 STUART STREET MULLUMBIMBY 2482
Demolition; Commercial development; Erection of a new structure; Co-living; Non-standard Housing
$8,208,200
50 new dwellings
PAN-647000
12 TOWERS DRIVE MULLUMBIMBY 2482
Subdivision
$8,580
PAN-649115
Modification Application3 STUART STREET MULLUMBIMBY 2482
Dwelling house; Alterations or additions to an existing building or structure; Residential Accommoda…
$167,000
1-storey · 1 new dwelling
PAN-647929
Modification Application124 STUART STREET MULLUMBIMBY 2482
Dual occupancy; Dwelling house; Erection of a new structure; Dual occupancy (detached)
$457,500
1-storey · 1 new dwelling
PAN-647659
Modification Application52 NEW CITY ROAD MULLUMBIMBY 2482
Dwelling house; Alterations or additions to an existing building or structure; Residential Accommoda…
$176,000
2-storey · 1 new dwelling
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Browse all pros →Builders Mullumbimby: Find Trusted Local Trades, Understand Costs and Navigate Byron Shire DAs
Planning a build or renovation in Mullumbimby? Here is the local construction intelligence, costs, approvals, and verified builders, you need before you spend a dollar.
Mullumbimby Development Activity Snapshot
Mullumbimby (postcode 2482) sits at the centre of Byron Shire's residential growth corridor, drawing owner-builders, architects, and custom home builders who understand the region's distinct hinterland character. Byron Shire Council assesses all Development Applications (DAs) for properties within the Mullumbimby township and its rural surrounds, applying the Byron Local Environmental Plan (LEP) alongside specific flood, bushfire, and heritage overlays.
The community context matters for builders: Mullumbimby's 4,447 individual taxpayers report an average taxable income of $60,723 (ATO, 2022-23 income year), a figure that shapes realistic project budgets and the strong local preference for quality, value-engineered construction rather than speculative volume building. The town's six schools carry an average ICSEA score of 1,040 (ACARA, 2024), signalling a highly engaged, design-conscious resident base, the same households investing in considered, often sustainable, home construction and renovation.
Predominant project types currently active in and around Mullumbimby include single dwelling new builds, secondary dwellings (granny flats), rural outbuildings, eco-sensitive home extensions, and heritage-fabric renovations in the Mullumbimby town centre conservation precinct.
Cost to Build in Mullumbimby, What to Expect
Indicative only, sourced from ABS Building Activity data and regional quantity surveyor benchmarks. Actual costs will vary by site, design, and contractor.
Building in Mullumbimby carries a cost premium above state averages for several compounding reasons:
- Topography and access: Mullumbimby's hilly terrain, extending into valley communities like Wilsons Creek, adds earthworks, retaining, and crane-access costs that flat coastal sites avoid.
- High-rainfall design requirements: Northern Rivers annual rainfall drives mandatory water-management design, elevated floor levels in flood-affected zones, and corrosion-resistant material selection.
- Bushfire and flood overlays: A significant portion of 2482 properties carry Bushfire Attack Level (BAL) ratings or flood planning levels, both of which add mandatory construction cost.
- Sustainable and non-toxic finishes: Mullumbimby's community, exemplified by the 587-student Shearwater Steiner School (ACARA, 2024), has an above-average appetite for eco-certified materials, which carry supply premiums in a regional market.
- Trades availability: The Byron Shire's popularity means quality local builders and subbies carry full order books. Build timelines and holding costs extend accordingly.
Use our build cost calculator to model your specific project, or review current material prices for the Northern Rivers region.
DA Approvals in Mullumbimby, Byron Shire Council Process
All Development Applications for Mullumbimby are lodged with and determined by Byron Shire Council. Applications are submitted through the NSW Planning Portal and assessed against the Byron LEP 2014 and Byron Development Control Plan (DCP) 2014.
What commonly slows approvals in this LGA:
- Flood and riparian area referrals: Properties near Brunswick River tributaries often require referral to NSW Department of Planning or DPI Water, adding weeks to determination time.
- Heritage considerations: Mullumbimby town centre contains heritage items and a conservation area. Alterations to contributing buildings require additional heritage impact statements.
- Ecological assessments: Byron Shire's biodiversity overlays frequently trigger koala habitat assessments and vegetation management plans.
- Neighbour notification periods: Byron Shire's notification requirements for certain development categories add a mandatory minimum period before determination can proceed.
- Council resourcing: Byron Shire, like many regional NSW councils, operates with constrained planning staff relative to application volumes, contributing to above-median assessment times.
Engaging a builder or architect with direct Byron Shire Council DA experience is one of the most effective ways to reduce avoidable delays. Browse professionals covering Mullumbimby who list Byron Shire DA experience in their profiles.
Mullumbimby Project Types: Indicative Costs and Approval Timelines
Cost ranges are indicative only, sourced from ABS Building Activity data and regional quantity surveyor benchmarks. Approval times are general guidance based on Byron Shire Council published data and are not guaranteed. Individual projects will vary.
| Project Type | Indicative Cost Range | Indicative Approval Time | Key Local Variables |
|---|---|---|---|
| New single dwelling (standard) | $350,000-$650,000+ | 60-120 days | Flood level, BAL rating, site slope |
| New single dwelling (custom / eco) | $650,000-$1,500,000+ | 90-150 days | Sustainable certification, engineering complexity |
| Secondary dwelling (granny flat) | $120,000-$280,000 | 30-90 days (CDC or DA) | Lot size, flood overlay, existing dwelling setbacks |
| Home extension / renovation | $80,000-$350,000+ | 40-100 days | Heritage overlay, structural tie-in, material access |
| Rural outbuilding / shed | $30,000-$150,000 | 30-60 days (often CDC) | Lot size, zoning, vegetation clearing |
Mullumbimby Homeowner Questions, Answered
How much does it cost to build a house in Mullumbimby?
Indicative costs run from roughly $2,800 to $4,500+ per square metre for a new custom home in the Mullumbimby area (ABS Building Activity data, indicative). Site slope, flood and bushfire overlays, and the local preference for quality sustainable finishes all push costs toward the upper end. Always obtain a fixed-price contract that accounts for these site-specific variables before committing.
How long does DA approval take in Mullumbimby?
Byron Shire Council targets statutory assessment timeframes set under the Environmental Planning and Assessment Act, but real-world determination times in Mullumbimby often extend to 60-120 days or longer for standard residential DAs. Flood referrals, heritage assessments, and ecological reports are the most common causes of delay. Engaging a builder or certifier experienced with Byron Shire from the outset meaningfully reduces risk.
Can I build a granny flat on my Mullumbimby property?
Secondary dwellings are permitted in most residential zones in Mullumbimby, subject to Byron Shire DCP controls on lot size, setbacks, and floor area. Properties in flood-affected zones face additional requirements around floor levels and drainage. Some compliant secondary dwellings can proceed via Complying Development Certificate (CDC), bypassing the full DA process and saving significant time.
How do I choose a builder in Mullumbimby?
Prioritise licensed builders (verify via NSW Fair Trading) with demonstrated Byron Shire Council DA experience, ideally with completed projects in flood or heritage overlays. Ask for references from Mullumbimby or nearby Northern Rivers projects. A builder who has navigated Byron Shire's specific overlay requirements, flood, bushfire, biodiversity, heritage, is worth a premium over a cheaper operator with no local track record.
What are Byron Shire Council's sustainable building requirements?
Byron Shire Council's planning framework actively encourages sustainable design through its DCP provisions on energy efficiency, water sensitivity, and vegetation retention. While mandatory BASIX compliance applies to all NSW residential builds, Byron Shire's local controls layer additional expectations around stormwater management and ecological impact. Builders and architects familiar with the Council's Net Zero aspirations can help you exceed minimums without blowing your budget.
Ready to move forward? Find builders and architects covering Mullumbimby in our verified professional directory, or sign up below to receive free DA alerts whenever a new development application is lodged near your Mullumbimby property, intelligence that homeowners, investors, and trades use to stay ahead of the market.